The post type template is not displaying, and the user discovered that a PHP template (single.php) is required for rendering Toolset post types. The user is inquiring about the possibility of using a Full Site Editing (FSE) template or if they have to use an old theme with PHP templates.
Solution:
Toolset currently relies on PHP templates, and it does not support Full Site Editing (FSE). To address this, you can use a simple PHP-based template that follows the classic WordPress theme structure. Unfortunately, FSE templates are not supported at the moment.
Problem:
The REST API is one way that WordPress and other applications communicate with the server. For example, the block editor screen relies on the REST API to display and save your posts and pages.
Solution:
I checked that the customer's site has Cloudfare CDN on.
I found a similar case where the culprit of this issue was Cloudfare firewall blocking wp-json/wp/v2 requests.
